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Finding the Fourth Proportional to 708,537, 978,130.13 and 490,910.69

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Solution

The fourth proportional to 708,537, 978,130.13 and 490,910.69 is: 677,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,537 : 978,130.13 = 490,910.69 : x
  2. Step 2: Convert to fraction form
    708,537/978,130.13 = 490,910.69/x
  3. Step 3: Cross multiply
    708,537x = 978,130.13 × 490,910.69
  4. Step 4: Simplify right side
    708,537x = 480,174,529,682.89
  5. Step 5: Solve for x
    x = 480,174,529,682.89/708,537
  6. Step 6: Final answer
    x = 677,698.60

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